Home / 21,146.82-29,182.28-11,586.63

Finding the Fourth Proportional to 21,146.82, 29,182.28 and 11,586.63

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Solution

The fourth proportional to 21,146.82, 29,182.28 and 11,586.63 is: 15,989.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.82 : 29,182.28 = 11,586.63 : x
  2. Step 2: Convert to fraction form
    21,146.82/29,182.28 = 11,586.63/x
  3. Step 3: Cross multiply
    21,146.82x = 29,182.28 × 11,586.63
  4. Step 4: Simplify right side
    21,146.82x = 338,124,280.92
  5. Step 5: Solve for x
    x = 338,124,280.92/21,146.82
  6. Step 6: Final answer
    x = 15,989.37

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.